Table 1.
Self-reported substance use variables derived from Treatment Outcomes Profile (TOP)
| QF measures | Distribution of cases across quintile levels of substance use | |||||||
|---|---|---|---|---|---|---|---|---|
| Substances | Mean | SD | Range | Non-user | Light | Moderate | Frequent | Heavy |
| Alcohol (u) | 40.43 | 53.72 | 1 – 252 | 136 | 32 | 19 | 21 | 24 |
| Heroin (g) | 0.91 | 1.51 | 0.01 – 10.50 | 148 | 35 | 10 | 22 | 17 |
| Cannabis (j) | 16.65 | 16.25 | 1 – 70 | 188 | 11 | 13 | 13 | 7 |
| Crack (g) | 0.47 | 0.68 | 0.02 – 3.50 | 191 | 13 | 9 | 10 | 9 |
Notes: QF quantity x frequency per week; alcohol measured in units (u); heroin and crack measured in grams (g); cannabis measured in joints (j)